Stock-Based Awards - Summary of Stock Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total Stock Based Compensation	$ 442	$ 661	$ 1,659	$ 1,653
Research and Development [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total Stock Based Compensation	144	180	465	383
General and Administrative [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total Stock Based Compensation	$ 298	$ 481	$ 1,194	$ 1,270